Seiko Prospex 145th Anniversary Limited Edition HBB001 Dive Watch

145 Years of Seiko. Built for the Ultimate Adventure.

The Seiko Prospex HBB001 commemorates Seiko’s 145th anniversary with a limited-edition dive watch designed for those who treat life as the ultimate adventure. Prospex timepieces are engineered for the sea, sky, and land, and this creation expresses Seiko’s heritage through a distinctive blue-and-white color motif inspired by the brand’s current innovation and signature colors.

The stainless steel case and bracelet pay homage to an iconic diving style, while the blue unidirectional rotating elapsed-timing bezel frames a silvery white dial with a practical date calendar. LumiBrite on the hands and markers provides outstanding visibility in low light, and the secure screw-down crown and case back reinforce the watch’s serious dive-ready construction.

Inside, the 23-jewel automatic Caliber 4R35 beats at 21,600 vibrations per hour and offers approximately 41 hours of power reserve, with manual winding capability for precise control. Limited to 9,999 pieces, the HBB001 pairs reliable timing in rough waters with the confident presence of a true Prospex tool watch.

Movement

• Caliber: 4R35
• Type: Automatic with manual winding capability
• Frequency: 21,600 vibrations per hour (3 Hz)
• Jewels: 23
• Power Reserve: Approx. 41 hours
• Functions: Date calendar

Case & Band

• Case Material: Stainless steel
• Bracelet: Stainless steel
• Diameter: 41.7mm
• Thickness: 12.3mm
• Crystal: Hardlex
• Bezel: Blue unidirectional rotating elapsed-timing bezel
• Crown: Screw-down crown
• Case Back: Screw-down case back
• Clasp: Tri-fold push-button release clasp with secure lock and extender

Additional Specifications

• Dial: Silvery white with blue-and-white anniversary color motif
• Water Resistance: 200m diver’s
• Magnetic Resistance: 4,800 A/m
• LumiBrite: Hands and markers
• Limited Edition: 9,999 pieces
• Reference: HBB001